Elevator-shaft door.



B. WEXLER.

ELEVATOR SHAFT DOOR.

APPLICATION FILED SEPT-9.1915.

Patented June 27, 1916.

BENJAMIN WEXLER, OF NEVI' YORK, N. Y.

ELEVATOR-SHAFT DOOR.

Specification of Letters Patent.

Patented June 27, 1916.

Application filed September 9, 1915. Serial No. 49,654.

To all whom it may concern Be it known that I, BENJAMIN \VEXLER, acitizen of the United States, and a resident of New York city, boroughof Brooklyn, in the county of Kings and State of New York, have inventedcertain new and useful Improvements in Elevator-Shaft Doors, of whichthe following is a specification.

This invention relates to certain new and useful improvements inelevator shaft doors.

Elevator shaft doors are usually hung in pairs, one opening upward andthe other opening downward and they are connected by means of chainswhich pass over suitable pulleys in the elevator shaft. In order thatthe bottom door, the upper edge of which is to be flush with the floorwhen completely opened, does not afford any resistance to trucking andfor the purpose of preventing the chains from being broken, it has beencustomary to provide, on the-guides in the elevator shaft, stopswithwhich a bar on the lower-door can contact when the upper edge of thelower door is flush with the floor. Any strains, jolts and so forth thatthe opened door may be subjected to are therefore not taken up by thechains but by these stops on the guides in the shaft. Heretofore suchstops simply consisted of a piece of metal riveted to the guides andthere was nothing whatever provided for taking up the lateral strain towhich the door is subjected when trucks pass over it, from the car tothe floor and vice versa and frequently such parts became detachedorweakened and one door unduly strained.

The object of my inventionis to provide a new and improved stop forelevator shaft doors which is simple in construction, strong anddurable, can easily be adjusted and fitted. is not dependent upon thestrength of bolts and serves to prevent the vertical and lateral strainsto which the door is subjected from injuring the door and guides for thesame.

In the accompanying drawings in which like letters of reference indicatelike parts in all the figures: Figure 1 is a horizontal sectional viewthrough the guides and the upper part of the door. Fig. 2 is anelevation of the guides with my improved stop attachment looking in thedirection of the arrow 00', Fig. 1. Fig. 3 is a similar view of theopposite side of the-flange .6 of the angle iron guide. Fig. 4 is afront view,

partly in section,- on the line y-y, Fig. 1.

The usual guide rail 1, in the form of an angle iron, is secured on thesides of the elevator shaft and to one flange of this angle iron guide asmaller angle iron 2 is bolted, on which the guide clip 3 is guided,whlch projects from the side edge of the door 4, all in the conventionalmanner. A bar 5 is secured to the top edge of the door and projectsbeyond the side edges of the same and forms a support for the door whenthe same is in lowered position and the projecting ends of this bar 5rest on a suitable stop. This has been provided heretofore.

To the. outer face of the flange 6 of the angle iron guide 1, a plate 7is securely fastened, which plate projects beyond the free edge of theflange 6 and has a flange 8 on its outer edge. F or the purpose ofsecurely fastening the plate 7 to the flange (3, the plate is providedon its inner surface with two transverse lugs 9 which are made integralwith the plate and enter corresponding slots in the flange 6 of theangle iron guide 1 and furthermore the plate 7 is held on the flange 6by .two rivets 10 which are passed through the flange 6 of the angleiron guide 1 and through the plate 7. By means of the rivets 10 theplate 7 is held against the flange 6, with the lugs 9 in the slotsprovided for the same in the flange G of the guide 1 and with the flange8 some distance from the free edge of the flange 6 of the angle ironguide 1. As long as these lugs 9 are held in the corresponding slots,the plate'7 cannot move lengthwise in relation to the angle iron guide1, even under the greatest shock. Adjacent to the flange 8 a rack 11,having upwardly projecting teeth, is formed on the inner face of theplate 7 and these teeth engage the down wardly projecting teeth of arack 12 formed on a stop bar or abutment bar 13, which bar 13 isadjustable up or down on the bar 7 and rests with one edge against theinner surface of the flange 8. A bolt 14 is passed through an opening inthe bar 13 and through a longitudinal slot 15 in the bar 7, which slothas rabbe'ted side edges as at 16. The head 17 of the bolt 14 rests inthe slot 15 and on the rabbets and as stated passes through the bar 13and is secured in place by a nut 18, screwed on its projecting end andresting against the outer side'of the bar 13.

A plate 19 projects from the bar 13, parallel with and in front of thedoor 4. The plate 7 is secured to the flange 6 of the angle iron guide 1by means of the lugs and rivets stated and is firmly connected with thesame so that it cannot yield under any downward pressure or shocks. Theplate 13 is then adjusted vertically and when it is in proper position,it is locked to the plate 7 by engaging the racks 11 and 12 and bydrawing up the nut 18 on the bolt 14- IVhen the bar 13 is thus adustedan vertical im not on y the same is transmitted through the teeth of theracks to the bar 7 and from the same through the lugs 9 to the guide 1.Therefore when the lower door a is lowered forcibly and brought incontact with the upper end of the bar 13, that is, when the bar 5 of thedoor is brought to bear upon the upper end of the bar 13 as it must whenthe door is in lowered position, and a heavy truck passes over the upperedge of the door, the weight of this truck is transmitted through thebar 5, the bar 13 and the bar 7 to the angle iron guide 1 withoutrelying upon parts which might be snapped or sheared oil under an undueload or by a shock.

At the upper end of the bar 13 I form a lug 20 which rests against theflange 8 of the bar 7. hen heavy trucks pass over the upper edge. of thelower door and are run from the car floor upon the building floor, itproduces an outward lateral strain on the door and on the bar 5 and toprevent parts being bent by this strain I have provided the lug 20against which the side of the bar 5 rests. Likewise for the purpose ofpreventing the outward thrust of a truck passing over the upper edge ofthe door 4L from subjecting the guide clip 3 to undue strain or bending,I provide the plate 19 on the inner surface of the bar 13, against whichthe face of the door can rest, so that this bar 19 takes up all thelateral strain that this door is subjected to and the small angle guide2 and the guide clip 3 are not subjected to any strain whatever. Thereis thus no liability of the parts yielding on account of weakness ofrivets as I connect the parts by racks and by lugs in the mannerdescribed for taking up the downward thrust. The thrust of the door inthe direction transversely to the door is taken up by the lu Q0 andplate 19 formed on the bar 13 which in turn bears against the flange 8of the bar 7. All parts are thus securely connected and vertical andlateral thrusts are transmitted directly to the angleiron guides 1 whichare firmly secured in the elevator shaft.

All that is necessary in mounting the elevator door and guide rails isto provide the rails with belt holes and with the slots for the lugs 9in proximity to the lower edge of the door opening. The exact positionof the upper edge of the bar 13 for supporting the bar 5 when the upperedge of the door is flush with the building floor, is then determinedand the bar 13 is secured in place on the bar 7 at the proper elevationby means of the two racks and the bolt 14. That is all the adjustmentthat is required. The belt 11 is only used for holding the racks in engagement and is subjected to no vertical or lateral shearing strainswhatever as the vertical strains are taken up by the teeth of the racksand the lateral strains on the bar 13 are taken up by the flange 8 ofthe bar 7.

My improved stop device is provided in the elevator shaft at each sideof-the door.

Having described my invention what I claim as new and desire to secureby Letters Y Patent is 1. The combination with door guides in anelevator shaft and a door mounted to move vertically on the same, of aprojection on the door beyond the sides of the same, a piece on thevertical car door guide, a

flange formed on said piece at the outer edge, e

a bar held on the said piece and resting against said flange and meansfor preventing longitudinal movement of said bar on the flanged piece onwhich it is held, substantially as set forth.

2. The combination with door guides in an elevatorshaft and a doormounted to move vertically on the same, of a projection on the doorbeyond the side of the same, a piece on the vertical door guide, a stopbar held on said piece, which stop bar is to be engaged by theprojection on the door and a plate projecting from the exposed face ofsaid stop bar, parallel with the front of the door, whereby said plateacts as a stop for transverse movement of the door, and the stop bar asa check for the door, against further downward movements of the same,substantially as set forth. I

3. The combination with door guides in an elevator shaft and a doormounted to move vertically on the same, of a projection on the doorbeyond the side of the same, a piece held on the vertical door guide, astop bar held on said piece, said stop bar being provided at its upperend with a lug, at its outer edge, whereby when the projection restsupon the top of the stop bar, the lug on the outer edge of the stop barserves to prevent lateral movements of the projection on the door inrelation to the stop bar, substantially as set forth.

Signed at New York city, borough of Manhattan in the county of New Yorkand State of New York this 9th day of July A. D. 1915. c

BENJAMIN IVEXLER.

lVitnesses a Oscar: A. GUNZ, MARION SHAW.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of I'atents. Washington, D. G,

